The Phantom MK-1 is a defense-focused humanoid robot built by San Francisco-based Foundation Robotics. Designed for military and tactical operations, it is capable of operating firearms including pistols, shotguns, and M16 rifles. As of March 2026, two units are reportedly deployed on the Ukrainian front lines, marking one of the first known active-duty deployments of humanoid robots in a combat zone. Featured in TIME magazine's 'Rise of the AI Soldiers' article.